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Earth At Night (WMS)

This image of Earth's city lights was created with data from the Defense Meteorological Satellite Program (DMSP) Operational Linescan System (OLS). Originally designed to view clouds by moonlight, the OLS is also used to map the locations of permanent lights on the Earth's surface.
The brightest areas of the Earth are the most urbanized, but not necessarily the most populated. (Compare western Europe with China and India.) Cities tend to grow along coastlines and transportation networks. Even without the underlying map, the outlines of many continents would still be visible. The United States interstate highway system appears as a lattice connecting the brighter dots of city centers. In Russia, the Trans-Siberian railroad is a thin line stretching from Moscow through the center of Asia to Vladivostok. The Nile River, from the Aswan Dam to the Mediterranean Sea, is another bright thread through an otherwise dark region.
Even more than 100 years after the invention of the electric light, some regions remain thinly populated and unlit. Antarctica is entirely dark. The interior jungles of Africa and South America are mostly dark, but lights are beginning to appear there. Deserts in Africa, Arabia, Australia, Mongolia, and the United States are poorly lit as well (except along the coast), along with the boreal forests of Canada and Russia, and the great mountains of the Himalaya.
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Earth lights at night for the entire earth.    Earth lights at night for the entire earth.

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Earth lights at night over the eastern hemisphere.    Earth lights at night over the eastern hemisphere.

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Earth lights at night over the western hemisphere.    Earth lights at night over the western hemisphere.

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Short URL to This Page:http://svs.gsfc.nasa.gov/goto?2916
Animation Number:2916
Completed:2004-02-16
Animators:Craig Mayhew (Raytheon) (Lead)
 Robert Simmon (SSAI)
Scientists:Christopher Elvidge (NOAA/NGDC)
 Marc Imhoff (NASA/GSFC)
Platform/Sensor/Data Set:DMSP/OLS
Series:WMS
Please give credit for this item to:
: data courtesy Marc Imhoff (NASA/GSFC) and Christopher Elvidge (NOAA/NGDC). Image by Craig Mayhew (NASA/GSFC) and Robert Simmon (NASA/GSFC).
 
Keywords:
DLESE >> Human geography
SVS >> Lights
SVS >> Urbanization
GCMD >> Earth Science >> Human Dimensions >> Population >> Population Distribution
SVS >> For Educators
SVS >> World Map >> Night
SVS >> World Map >> Electricity
View Animation in Google Earth Google Earth KML file is available here.
DEPC Metadata is available here.
 
 


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Many of our multimedia items use the GCMD keywords. These keywords can be found on the Internet with the following citation:
Olsen, L.M., G. Major, K. Shein, J. Scialdone, S. Ritz, T. Stevens, M. Morahan, A. Aleman, R. Vogel, S. Leicester, H. Weir, M. Meaux, S. Grebas, C.Solomon, M. Holland, T. Northcutt, R. A. Restrepo, R. Bilodeau, 2013. NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version 8.0.0.0.0

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